Geissele Super Modular Rail MK15 14.50″ 05826B

The Geissele Automatics Super Modular Rail HK416 MK15 (05826B) is a direct-replacement handguard engineered to upgrade the stock rail on HK416 and MR556 platforms. Constructed from 6061-T6 aluminum and finished in Type III hardcoat anodize, the SMR MK15 delivers the strength, rigidity and modularity expected from Geissele. It accepts M-LOK accessories and uses the existing HK barrel nut for installation.

Key Specifications

• The manufacturer is Geissele Automatics.
• The model number is 05826B.
• The rail measures 14.50 inches.
• The primary material is 6061-T6 Aluminum.
• The finish is Type III hardcoat anodize (Hardcoat Anodized).
• The mounting system is M-LOK.
• Compatible with HK416 / MR556 platforms.
• Installation uses the stock HK barrel nut.
• The exterior color is Black.

Designed for demanding use where rigidity and modular accessory mounting matter, the SMR MK15 blends military-grade construction with Geissele’s attention to detail. Its 14.50″ profile and M-LOK interface provide a flexible foundation for lights, grips, and rail sections while retaining the HK barrel nut for straightforward installation. For builders and operators seeking a durable, no-nonsense upgrade to HK416/MR556 handguards, this rail delivers proven materials and thoughtful engineering.